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Features and Benefits

2 modes of operation
Standalone with fixed settings
Interfaced to a microcontroller for user-defined settings

Proximity detection output flag

2-wire serial interface (I2C-compatible)

Operating temperature
−40°C to +85°C

10-lead MSOP package

Product Details

The AD7151 delivers a complete signal processing solution for capacitive proximity sensors, featuring an ultra-low power converter with fast response time. The AD7150 is a two-channel alternative to the AD7151.

The AD7151 uses Analog Devices, Inc., capacitance-to-digital converter (CDC) technology, which combines features important for interfacing to real sensors, such as high input sensitivity and high tolerance of both input parasitic ground capacitance and leakage current.

The integrated adaptive threshold algorithm compensates for any variations in the sensor capacitance due to environmental factors like humidity and temperature or due to changes in the dielectric material over time.

By default, the AD7151 operates in standalone mode using the fixed power-up settings and indicates detection on a digital output. Alternatively, the AD7151 can be interfaced to a microcontroller via the serial interface, the internal registers can be programmed with user-defined settings, and the data and status can be read from the part.

The AD7151 operates with a 2.7 V to 3.6 V power supply. It is specified over the temperature range −40°C to +85°C.

Reference Materials

Technical Articles (1)

Webcast (1)

Design Resources

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Sample & Buy

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams
& pin function descriptions may be found in the datasheet.

Temperature Range

This is the acceptable operating range of the device. The various ranges specified
are as follows:

Commercial: 0 to +70 degrees Celsius

Military : -55 to +125 degrees Celsius

Industrial: Temperature ranges may vary by model. Please consult the datasheet for
more information.

Automotive: -40 to +125 degrees Celsius

Packing, Qty

Indicates the packing option of the model (Tube, Reel, Tray, etc.) and the standard
quantity in that packing option.

Price

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars
(FOB USA per unit for the stated volume), and is subject to change. International
prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific
price or delivery quotes, please contact your local Analog Devices, Inc. sales office
or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based
on 1-piece pricing.

Production Availability

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the warehouse. Most orders ship within 48 hours of this date.Once an order has been
placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm
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This is the list of Product Change Notifications (PCN) and Product Discontinuance
Notifications (PDN) published on the web for this model. Click on the link to access
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